66770703 has 16 divisors (see below), whose sum is σ = 99306240. Its totient is φ = 44339832.

The previous prime is 66770689. The next prime is 66770723. The reversal of 66770703 is 30707766.

It is not a de Polignac number, because 66770703 - 2⁸ = 66770447 is a prime.

It is a super-2 number, since 2×66770703² = 8916653558228418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66770723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2400 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (6206640).

Almost surely, 2^66770703 is an apocalyptic number.

66770703 is a deficient number, since it is larger than the sum of its proper divisors (32535537).

66770703 is a wasteful number, since it uses less digits than its factorization.

66770703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675 (or 9669 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 36.

The square root of 66770703 is about 8171.3342239808. The cubic root of 66770703 is about 405.6909467462.

The spelling of 66770703 in words is "sixty-six million, seven hundred seventy thousand, seven hundred three".